I'm deciding between two panels for my project, I already have approved building permits and PG&E interconnection agreement (need to be careful about what I change). I submitted the Canadian Solar CS3N-390MS, however it looks like pricing is much better on the Canadian Solar CSR-390MS. I'm going to be installing 28 panels and the CS3N panels are about $40 more per panel so it adds up, is it worth it?
| CS3N-390MS (390W) | CS6R-390MS-HL (390W) | |
| DC Electrical Characteristics | ||
| STC Power Rating | 390W | 390W |
| PTC Power Rating | 367.93W1 | 367W2 |
| STC Power per unit of area | 17.8W/ft2 (191.8W/m2) | 18.6W/ft2 (199.7W/m2) |
| Peak Efficiency | 19.18% | 19.97% |
| Power Tolerances | 0%/+3% | data not available |
| Number of Cells | 132 | 108 |
| Nominal Voltage | not applicable | not applicable |
| Imp | 10.6A | 12.84A |
| Vmp | 36.8V | 30.4V |
| Isc | 11.38A | 13.7A |
| Voc | 44.1V | 36.4V |
| NOCT | 42°C | data not available |
| Temp. Coefficient of Isc | 0.05%/K | 0.05%/K |
| Temp. Coefficient of Power | -0.34%/K | -0.34%/K |
| Temp. Coefficient of Voltage | -0.115V/K | -0.094V/K |
| Series Fuse Rating | 20A | 25A |
| Maximum System Voltage | 1000V | 1000V |
| Mechanical Characteristics | ||
| Type | Mono PERC | Monocrystalline Silicon |
| Output Terminal Type | Multicontact Connector Type 4 | Multicontact Connector Type 4 |
| Output Cable Wire Gauge | 12 AWG | 12 AWG |
| Output Cable Wire Type | PV Wire | PV Wire |
| Output Cable Wire Length | 1,250mm (49.2in) | |
| Frame Color | Black | Black |
| Backsheet Color | Black | Black |
| Length | 1,940mm (76.4in) | 1,722mm (67.8in) |
| Width | 1,048mm (41.3in) | 1,134mm (44.6in) |
| Depth | 35mm (1.4in) | 35mm (1.4in) |
